Home / 18,216.90-25,140.78-10,258.65

Finding the Fourth Proportional to 18,216.90, 25,140.78 and 10,258.65

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Solution

The fourth proportional to 18,216.90, 25,140.78 and 10,258.65 is: 14,157.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.90 : 25,140.78 = 10,258.65 : x
  2. Step 2: Convert to fraction form
    18,216.90/25,140.78 = 10,258.65/x
  3. Step 3: Cross multiply
    18,216.90x = 25,140.78 × 10,258.65
  4. Step 4: Simplify right side
    18,216.90x = 257,910,462.75
  5. Step 5: Solve for x
    x = 257,910,462.75/18,216.90
  6. Step 6: Final answer
    x = 14,157.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.